中文摘要：

作者首次对柳区砾岩夹层中的泥岩和泥质粉砂岩进行了孢粉学研究，共鉴定出52个形态属。其孢粉组合特征是：以被子植物花粉占优势（62．77％-83．19％），其次是裸子植物花粉（11．95％-32．31％），蕨类植物孢子最少（4．80％-10．38％）。被子植物花粉以具孔类为主，三孔沟或三沟类花粉在组合中有一定含量。裸子植物花粉以具双气囊类居多。孢粉植物群的总体特征表明其时代可能为古近纪晚期。当时的古植被为落叶阔叶林或针阔混交林，气候较温暖湿润，主要为暖温带的环境。

英文摘要：

This paper reports the first palynological study of interlayers of mudstones and mud-sandstone in the Liuqu Conglomerates. Fifty-two genera were identified in this palynological assesmblage. The assemblage are charaeterzed by the predominant angiosperm pollen grains （62.77 0/00--83.19 % ）. The second common group is gymnosperm pollens （11.95 %-- 32.31%）, and pteridophyte spores are relatively rare （4.80%--10.38 %）. Among the angiosperm pollens the most abundant are porate pollens, followed by tricolporate and tricolpate pollens in a moderate percentage. Bisaccate pollens dominate the gymnosperm pollens. The palynologieal assemblage from the Liuqu Conglomerates suggests a age of the Late Paleogene and a broad-leaved deciduous forest or mixed with conifer-broad-leaved forest, showing a warm-temperate climatic condition.